Describe two techniques used by operating systems to schedule processes. Illustrate how each technique can produce a different order of execution by showing an example with four concurrent processes.
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- A deadlock occurs when a group of processes is stalled because one process is holding a resource and waiting for another process to obtain it. Consider the situation when two trains are approaching each other on the same track and there is only one track: once they are in front of each other, neither train can proceed. In operating systems, a similar scenario happens when two or more processes possess certain resources while waiting on resources owned by other processes (s). In the picture below, Process 1 is holding Resource 1 and waiting for Process 2 to acquire Resource 2, while Process 2 is waiting for Resource 1. Give an example of a realistic deadlock avoidance approach and describe the basic strategy behind it.Examine the scheduling of processes and threads and contrast and compare them.Correctly arrange them in the order in which they are carried out to handle the interruption of a running user process by assigning a number from 1 through 9 to indicate the precedence order for the following steps.For example, 1 would indicate the first step in the process, 2 would indicate the second in theprocess and so on.
- Consider a situation that arises due to the use of several threads of processing by an operating system.Please Implement in C programming Language Given the list of processes, their CPU burst times, arrival times, and priorities implement the SJF scheduling algorithm on the processes with preemption. Compute and print the completion Time(CT), Turnaround Time(TAT), and Waiting Time(WT) for each process using C Programming. Waiting time: Processes need to wait in the process queue before execution starts and in execution while they get preempted. Turnaround time: Time elapsed by each process to get completely served. (Difference between submission time and completion time). Task 1: SJF Scheduling with preemption You can use the following input as a sample:Describe the approaches being taken to address the issue of concurrent processing in an operating system.
- Please Implement in C programming Language Given the list of processes, their CPU burst times, arrival times, and priorities implement the Round Robin scheduling algorithm on the processes with preemption. Compute and print the completion Time(CT), Turnaround Time(TAT), and Waiting Time(WT) for each process using C Programming. Waiting time: Processes need to wait in the process queue before execution starts and in execution while they get preempted. Turnaround time: Time elapsed by each process to get completely served. (Difference between submission time and completion time).The distinction between having "many processes" and "many threads" refers to the manner in which a system handles concurrent execution. Could you kindly elucidate the intended meaning of your statement in a manner that is easily comprehensible?In a multiprocessor system, busy waiting is sometimes tolerated rather than blocking the process. In such an environment if context switch time is S, what is the maximum amount of busy waiting time that may be tolerated when a process gets stuck in spinlock? Justify/explain your answer.